Plate-printing press.



N0. 761,909. PATENTED JUNE 7, 1964.

G. F. READ. PLATE PRINTING PRESS.

APPLICATION FILED AUG. 26, 1901. N0 MODEL. v 2 SHEETS-SHEET 1.

. Ii u H H I. 6 v I I J2 T' TMH No. 761,909. v PATENTED JUNE 7, 1904..

'G.F.READ. PLATE PRINTING PRESS.

APPLICATION FILED AUG.26, 1901. N0 'MODEL.

2 SHEETS-SHEET 2.

' practice that the inking-rollers or similar inkand useful Improvements in Plate-Printing construction embodying the same, such a de UNITED STATES Patented June '7, 1904.

PATENT OFFICE. I

GEORGE F. READ, OF BROOKLYN, NEW YORK, ASSIGNOR TO ROBERT HOE, OF NEW YORK, N. Y.

PLATE-PRINTING PRESS.

SPECIFICATION forming part of Letters Application filed August 26, 1901.

To all whom 711; flea/y concern:

Be it known that I, GEORGE F. READ, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, and State of New York, have invented certain new Presses, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to printing-presses of that class in which engraved printingplates are used, commonly known as plateprinting presses, and more especially to plate-printing presses of those classes in which deeply-engraved plates are used, as-for instance, in printing for use in transfer processesalthough the invention is applicable generally in plate-printing presses.

The object of the invention is to provide eflicient means for securing the filling of the engraved lines with ink, it being found in ing devices used will not properly force the ink. into deeply-engraved lineson the printingplate.

As a full understanding of the invention can best be given by a detailed description of a scription will now be given in connection with the accompanying drawings, showing the invention as applied in its preferred form in connection with a plate-printing press of common form, and the features forming the invention will then be specifically pointed out in the claims.

In the drawings, Figure 1 is a plan view of the press, showing the plate just passing under my' devices for rubbing the ink into the engraved lines. Fig. 2 is an elevation of the press looking in the direction of the arrow in Fig, 1. Fig. 8 is an enlarged plan view showing the plate in the same position as in Fig. 1 and illustrating the action of my devices upon the ink on the surface of the plate. Fig. 4 is an elevation on the same scale as Fig. 3 looking in the direction of the arrow in that figure. Fig. 5 is a longitudinal section of the plate and bed;

The press shown is of a common type, simi- Patent No. 761,909, dated June '7, 1904.

Serial No, 73,213. (No model.)

inking devices are shown as consisting of the rollers D, with the usual fountain d. An automatic wiper E of a common type is preferably used. The plate may be polished by hand or by an automatic polisher, if desired, after leaving the wiper E, and then passes under the impression-roller F for printing, as usual in this type of press. It will be understood that the automatic Wiper E may be omitted and the plate wiped by hand; but combinations including the automatic Wiper form more specific features of the invention, one object of the invention being to provide a press that will secure the automatic and efiicient inking of deeply-engraved plates.

Referring now to the parts in which the present invention is especially embodied, between the inking-rollers D and the wiper E are placed devices for rubbing the ink into the engraved lines on the plate and for removing the surplus ink from the surface of the plate before the latter passes to the wiper. These devices in the preferred form. shown consist of one or more rotating frames or carriers 10, two being shown and preferably used, in each of which carriers are mounted four blocks 11. (Shown as cylindrical in form.) These blocks 11 are preferably of wood and are spring-pressed downward in the carriers 10 by springs 12, the position and pressure of each of these blocks being adjustable independently of the others by bolts 1. The blocks 11, which form what may be termed a muller, are adjustable together toward and from the plate P, for which purpose the carriers 10 are mounted to slide vertically on the shaft 13, by which they are rotated, and the two carriers are raised and lowered simultaneously on the shaft 13 by a yoke 14 engaging grooved hubs 15 on the carriers, this yoke 14. being adjustable vertically by a bolt 16, provided with hand-wheel 17. The shaft 13 and carriers 10, with the blocks 1l,may be rotated by any suitable means, but are shown as driven through bevel-gears 18 from cross-shaft 19, which in turn is driven by chain 20 from the upper inking-roller D, which in turn is driven from shaft S at the base of the machine through bevel-gears and shaft T.

In order to secure the proper filling of the deeply-engraved lines, especially in connection with transfer processes, a large amount of ink is used, and means are preferably employed in connection with the muller for removing the surplus ink from the face of the plate before it passes to the wiper. For this purpose there is shown a scraper 21, consisting of a metal plate set at an incline to the surface of the printing-plate and preferably positioned at an angle to the path of the printing-plate, as shown. Beneath this scraper2l is provided a trough 22, into which the ink from the scraper may be wiped after the printing-plate has passed the latter. The rear of the bed B, carrying the printing-plate P, is also preferably provided with a trough 23, which receives some of the excess ink as the rear edge of the printing-plate P passes the scraper.

It will be understood that the devices shown for rubbing the ink into the lines of the engraved plate are only the preferred form of devices that may be used for this purpose and that I am not to be limited to the exact form or arrangement of devices selected for illustration of my invention, although this preferred construction forms in itself a specific part of the invention.

What I claim is 1. In a plate-printing press, the combination with devices for applying ink to the plate, of a rubbing device having a fiat surface traveling over the plate in curved lines for rubbing ink into the lines of the plate,and a scraper for removing ink from the surface of the plate after the ink has been rubbed in, substantially as described.

2. In a plate-printing press, the combination with devices for applyingink to the plate, of a rubbing device having a flat surface traveling over the plate in curved lines for rubbing ink into the lines of the plate, a scraper for removingink from the surface of the plate after the ink has been rubbed in, and means for wiping the plate after the action of the scraper, substantially as described.

3. In a plate-printing press, the combination with inking-rollers for applying ink to the plate, of means for rubbing ink into the lines of the plate consisting of flat blocks traveling over the plate in curved lines, substantially as described.

4:. In a plate-printing press, the combination with inking-rollers for applying ink to the plate, of means for rubbing ink into the lines of the plate consisting of flat blocks traveling over the plate in curved lines, and a scraper for removing surplus ink from the surface of the plate after the ink has been rubbed in, substantially as described.

5. The combination with means for ad vaneing a printing-plate, of a carrier rotating in planes parallel with the plate having a series of blocks therein engaging the surface of the inked plate, substantially as described.

6. The combination with means for advancing a printing-plate, of a carrier rotating in planes parallel with the plate having a series of spring-pressed blocks therein engagingthe surface of the inked plate, substantially asdescribed.

7. The combination with means for advancing a printing-plate, of a carrier rotating in planes parallel with the plate having a series of spring-pressed blocks therein engaging the surface of the plate, means for adjusting the blocks toward and from the plate independently of each other, and means for adjusting the carrier toward and from the plate, substantially as described.

8. The combination with means for ad vaneing a printing-plate, of a plurality of carriers rotating in planes parallel with the plate arranged transversely to the plate, a plurality of blocks in each carrier arranged to engage the surface of the plate, means for adjusting the blocks independently of each other, and means for simultaneously adjusting the carriers toward and from the plate, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

GEOIH l E F. RICA l \Vitnesses:

F. IV. H. CnANn, L. Roman. 

